Reviewed, UniProtKB/Swiss-Prot O28173 (RIBB_ARCFU)

Names and origin

Protein names

Recommended name:
    3,4-dihydroxy-2-butanone 4-phosphate synthase
      Short name=DHBP synthase
    EC=4.1.99.12

Gene names

Name:	ribB
Ordered Locus Names:	AF_2107

Organism

Archaeoglobus fulgidus [Complete proteome] [HAMAP]

Taxonomic identifier

2234 [NCBI]

Taxonomic lineage

Archaea › Euryarchaeota › Archaeoglobi › Archaeoglobales › Archaeoglobaceae › Archaeoglobus

Protein attributes

Sequence length	238 AA.
Sequence status	Complete.
Protein existence	Inferred from homology.

General annotation (Comments)

Function	Catalyzes the conversion of D-ribulose 5-phosphate to formate and 3,4-dihydroxy-2-butanone 4-phosphate By similarity. HAMAP MF_00180
Catalytic activity	D-ribulose 5-phosphate = formate + L-3,4-dihydroxybutan-2-one 4-phosphate. HAMAP MF_00180
Cofactor	Binds 2 divalent metal cations per subunit. Magnesium or manganese By similarity. HAMAP MF_00180
Pathway	Cofactor biosynthesis; riboflavin biosynthesis; 2-hydroxy-3-oxobutyl phosphate from D-ribulose 5-phosphate: step 1/1. HAMAP MF_00180
Subunit structure	Homodimer By similarity. HAMAP MF_00180
Sequence similarities	Belongs to the DHBP synthase family.

Ontologies

Keywords
Biological process	Riboflavin biosynthesis
Ligand	Magnesium Manganese Metal-binding
Molecular function	Lyase
Technical term	Complete proteome
Gene Ontology (GO)
Biological process	riboflavin biosynthetic process Inferred from electronic annotation. Source: HAMAP
Molecular function	3,4-dihydroxy-2-butanone-4-phosphate synthase activity Inferred from electronic annotation. Source: HAMAP magnesium ion binding Inferred from electronic annotation. Source: HAMAP manganese ion binding Inferred from electronic annotation. Source: HAMAP
Complete GO annotation...

Sequence annotation (Features)

	Feature key	Position(s)	Length	Description	Graphical view	Feature identifier
Molecule processing
	Chain	1 – 238	238	3,4-dihydroxy-2-butanone 4-phosphate synthase HAMAP MF_00180		PRO_0000151823
Regions
	Region	26 – 27	2	Substrate binding By similarity
	Region	166 – 170	5	Substrate binding By similarity
Sites
	Metal binding	27	1	Magnesium or manganese 1 By similarity
	Metal binding	27	1	Magnesium or manganese 2 By similarity
	Binding site	31	1	Substrate By similarity
	Binding site	190	1	Substrate By similarity
	Site	152	1	Essential for catalytic activity By similarity
	Site	190	1	Essential for catalytic activity By similarity

Sequences

	Sequence		Length	Mass (Da)
	O28173-1 [UniParc]. Last modified January 1, 1998. Version 1. Checksum: D900324946E5DA53	FASTA	238	26,586
	10 20 30 40 50 60 MILDFEESLR AFRKGSPVLI YDFEDREGET DIAIPAIHVG KDEVAMMRID GGGLICVAIH 70 80 90 100 110 120 PVAAEKLGLP FMHDVLRIAS EKLPEIRKVA DADDIKYDSR SSFSLWVNHR DTFTGITDVD 130 140 150 160 170 180 RALTIRRIGE VVDEVMMGKK VDFGREFRSP GHVALLRAAD KLTYERVGQT ELSVALAEMA 190 200 210 220 230 GIAPAVAICE MLDAETGKAL TKEKAMEYAE EKGIPFIDGR TIVEHYRKFR EVEVSLFV

References

[1]

"The complete genome sequence of the hyperthermophilic, sulphate-reducing archaeon Archaeoglobus fulgidus." Klenk H.-P., Clayton R.A., Tomb J.-F., White O., Nelson K.E., Ketchum K.A., Dodson R.J., Gwinn M.L., Hickey E.K., Peterson J.D., Richardson D.L., Kerlavage A.R., Graham D.E., Kyrpides N.C., Fleischmann R.D., Quackenbush J., Lee N.H., Sutton G.G. , Gill S.R., Kirkness E.F., Dougherty B.A., McKenney K., Adams M.D., Loftus B.J., Peterson S.N., Reich C.I., McNeil L.K., Badger J.H., Glodek A., Zhou L., Overbeek R., Gocayne J.D., Weidman J.F., McDonald L.A., Utterback T.R., Cotton M.D., Spriggs T., Artiach P., Kaine B.P., Sykes S.M., Sadow P.W., D'Andrea K.P., Bowman C., Fujii C., Garland S.A., Mason T.M., Olsen G.J., Fraser C.M., Smith H.O., Woese C.R., Venter J.C. Nature 390:364-370(1997) [PubMed: 9389475] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. Strain: ATCC 49558 / VC-16 / DSM 4304 / JCM 9628 / NBRC 100126.

Cross-references

Sequence databases
EMBL GenBank DDBJ	AE000782 Genomic DNA. Translation: AAB89141.1.
PIR	C69513.
RefSeq	NP_070932.1.
3D structure databases
SMR	O28173. Positions 5-226.
ModBase	Search...
Genome annotation databases
GeneID	1485336.
GenomeReviews	Gene locus AF_2107 in contig AE000782_GR.
KEGG	afu:AF2107.
NMPDR	fig|224325.1.peg.2093.
TIGR	AF_2107.
Phylogenomic databases
HOGENOM	HBG735778.
OMA	RWGHTEL.
Enzyme and pathway databases
BioCyc	AFUL224325:AF_2107-MONOMER.
BRENDA	4.1.99.12. 7576.
Family and domain databases
HAMAP	MF_00180. RibB. [Tree]
InterPro	IPR017945. DHBP_synth_RibB-like_a/b_dom. IPR000422. DHBP_synthase_RibB. [Graphical view]
Gene3D	G3DSA:3.90.870.10. DHBP_synth_RibB-like_a/b_dom. 1 hit.
Pfam	PF00926. DHBP_synthase. 1 hit. [Graphical view]
TIGRFAMs	TIGR00506. ribB. 1 hit.
ProtoNet	Search...

Entry information

Entry name

RIBB_ARCFU

Accession

Primary (citable) accession number: O28173

Entry history

Integrated into UniProtKB/Swiss-Prot:	December 1, 2000
Last sequence update:	January 1, 1998
Last modified:	February 9, 2010
This is version 59 of the entry and version 1 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)

Annotation project

HAMAP (High-quality Automated and Manual Annotation of microbial Proteomes)